The US-led coalition, which claims to be fighting the Takfiri Daesh group in Syria, has airdropped arms for militants fighting the Syrian government in the Arab country’s northwest.
The so-called Syrian Observatory for Human Rights said coalition aircraft had dropped weapons and ammunition for the militants in the town of Marea in Aleppo province on Thursday.
"The alliance dropped them ammunition... Their situation was difficult," a militant commander, who had asked not to be named, also said, Reuters reported.
Washington and dozens of its allies have been conducting military operations in Syria and Iraq since September 2014. The campaign has fallen severely short of dislodging Daesh.
The armed groups fighting in Marea close to the Turkish border enjoy the support of the countries that pursue the overthrow of Syrian President Bashar al-Assad. They have been funneling weaponry and supplies to the militants through the Turkish soil.
The US and its allies have been providing military and financial aid to militants fighting the Syrian government since 2011, when the country became engulfed in deadly foreign-backed militancy.
Some of the weapons have ended up in the hands of Daesh terrorists.
In October 2014, Daesh released a video in which it bragged about recovering weapons and supplies that the US military had intended to deliver to Kurdish fighters in the Syrian city of Kobani.
Amnesty International also reported last year that Daesh had developed a substantial lethal arsenal from US-made weapons and equipment they had captured from the Iraqi military and fighters.